html,body{
    font-size: 12px;
    font-family: Arial,Microsoft YaHei,Microsoft Sans Serif,Microsoft SanSerf,微软雅黑;
}
button{
    padding: 0;
    border: none;
}
.wrapper{
    width: 1140px;
    margin: 0 auto;
}
.f_left{
    float: left;
}
.f_right{
    float: right;
}
.clearfix::after{
    content: "";
    display: block;
    clear: both;
    height: 0;
    font-size: 0;
    visibility: hidden;
}
.one_text{
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.clearfix{
    *zoom: 1;
}